Internet phone system and internet phone service method for a mobile telephone

Abstract

An Internet telephone system and an Internet telephone service method capable of connecting a traditional wired telephone to a mobile communication network through the Internet instead of the PSTN. The system includes: a telephone; a connection conversion device for connecting the phone to the Internet or PSTN; a user's computer, wherein software for connecting the phone to the Internet through the connection conversion device is installed; A VoIP (Voice over Internet Protocol) gateway connecting the mobile communication network to the Internet; and a mobile phone for accessing the Internet. The connection switching device includes: an off-hook detector for detecting the off-hook state of the phone; an adapter for connecting the phone to the Internet or PSTN according to an order; A duplex circuit for conversion and restoration between one-way signals to four-way signals for transmission and reception to suppress sound leakage and sidetone; an audio decoder for decoding the DTMF tones of the telephone; and a microprocessor for exchanging control data from the user's computer, controlling the adapter so that the phone connects to the Internet when the off-hook detector detects the off-hook state of the phone, and when the The microprocessor provides number data to the user's computer upon receipt of the number data from the audio decoder.

Description

technical field [0001] The present invention relates to a technology combining Internet telephony and mobile telephony, in particular to an Internet telephony system and Internet telephony service capable of connecting traditional wired telephones to mobile communication networks via the Internet instead of the PSTN (Public Switched Telephone Network) method. Background technique [0002] As is generally known in the art, Internet telephony (referred to as IP telephony) converts an analog sound signal into a digitally encoded signal, and transmits the digital signal to a recipient not through the PSTN but through the Internet (Packet Communication Network), thereby Provide telephone service. For this service, the Internet phone digitizes and compresses the analog sound signal at 64Kbps, and transmits the 64Kbps sound signal through a packet network according to a transmission standard protocol (such as H.323, etc.). [0003] According to the types of terminals used at both...

AI Technical Summary

Problems solved by technology

[0010] In this structure of sharing the revenue of mobile communication services, since KT has a monopoly position in PSTN in Korea, the benefit distribution structure is relatively unfavorable for mobile communication providers

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